Trap



H. .BORDEN.

TRAP.

APPLICATION FILED FEB-7,1921.

1 1 2 6 1 a Patented Apr. H, 1922.

SAND f 7 1-0 SEWER 7/ INVENTOR.

HORACE BURDEN, OF NEW BEDFORD, MASSACHUSETTS.

TRAP.

eiaesi.

Application filed February 7, 1921.

useful improvements in traps and pertains more especially to traps used in connection with sewers.

The primary object of the invention is to provide a trap structure by the use of which gases and odors from the sewer are prevented from rising above the water in the trap and passing into the street.

A further object of the invention is to pro vide a hood or closure formed to allow water entering the trap to pass into the sewer and at the same time to prevent gases or odors from the sewer entering the trap.

Stfll further the invention aims to provide a novel form of hood with a water seal and a novel mounting for the valve which latter also has a novel form of connection with the sewer.

The invention further resides in the novel construction and combination of parts as more fully hereinafter described and claimed.

In the drawings, the figure is a vertical sectional view of the invention.

In proceeding in accordance with the present invention, a preferably cement block 1 is employed the center of which is formed with a longitudinal opening 2, and the rear face 3 of which inclines downwardly and out wardly, while the front face is formed with an outwardly extending circular collar t. A hinge bar 5 seats on top of the block 1 and is formed with a downwardly extending outer end 6 which engages the front face of the block. The block 1 and the hinge bar 5, are built in a wall 11 forming a part of the trap or sand catcher 7, the inclined rear face 3 of the block extending rearwardly of the wall. An elbow 10 is connected to the collar 4 and extends to the sewer not shown.

A hollow or approximately pan or boxshaped valve 8 is employed which is hinged at 8 to the rear end of the bar 5 and seats at Specification of Letters Patent.

Patented Apru'llt, 1922.

Serial No. 443,052.

its free edges against the inclined face 3 of the block 1. The hood is closed on both sides and its top but is open at its bottom at 9 so that water entering the trap from gutter G at the top of the wall will pass through the open bottom 9 of the hood, through the block opening 2, and thence downwardly through the elbow 10 to the sewer.

Any sand or sediment entering the sewer will gravitate down onto the bottom of the traps as depicted in thedrawings. Since the lower end of the hood extends below the' opening 2 of the block, it will be apparent that a water seal is formed preventing gases or odors from the sewer passing above the water in the trap and from the latter into the street. Should there be any excessive back pressure of gas, the latter will act against and swing the hood open thus preventing damage to the latter.

From the foregoing it willbe seen that the structure is simple, easily operated and can be economically produced and also cheaply installed since it is merely built into the wall. The hood while capable of swinging at all times enables water to enter the sewer and at the same time prevents gas from the sewer passing above the water in the trap, due to the lower open end of the hood being submerged in the water, and located below the bottom of the block opening.

A pipe 12, may be employed which is connected to the elbow and leads downwardly to the sewer, not shown.

lVhat is claimed is:

In a sewer trap, a wall forming a part of a sand trap, a cement block built into the wall to become a part thereof and having a longitudinal opening, and a horizontal hinge bar seated on the upper face of the block and having one end terminating adjacent to the front end of the blockand having a hood hinged to said end thereof, and the oppositeend of the hinge bar being turned at an angle so as to restrict longitudinal movement of the hinge bar, the hinge bar being built into the wall and held seated on the block by the parts of the wall adjacent to the bar.

In testimony whereof I aflix my signature.

HORACE BQRDEN. 

